/// <summary>
/// Write to the twin for the given flatten
/// </summary>
/// <param name="twin">The destination twin</param>
/// <param name="flatName">The flat name, e.g. tags.city or properties.desired.TTL</param>
/// <param name="value">The tag/property value</param>
static public void Set(this Twin twin, string flatName, dynamic value)
{
// Remove the common prefix "twin."
flatName = flatName.TryTrimPrefix(PREFIX_TWIN);
if (flatName == DEVICEID)
{
twin.DeviceId = value.ToString();
}
// Pick the selector according to prefix of the flat name, then set the value
string name;
foreach (var selector in _selectors)
{
if (flatName.TryTrimPrefix(selector.Key, out name))
{
TwinCollectionExtension.Set(selector.Value(twin), name, value);
return;
}
}
// Invalid flat name should not cause any exception
// Write to reported properties is allowed here
}
/// <summary>
/// Read from the twin for the given flatten name
/// </summary>
/// <param name="twin">The source twin</param>
/// <param name="flatName">The flat name, e.g. tags.city or properties.desired.TTL</param>
/// <returns>The tag/property value</returns>
static public dynamic Get(this Twin twin, string flatName)
{
// Remove the common prefix "twin."
flatName = flatName.TryTrimPrefix(PREFIX_TWIN);
// "deviceId" is a built-in property of the twin
if (flatName == DEVICEID)
{
return(twin.DeviceId);
}
// Pick the selector according to prefix of the flat name, then get the value
string name;
foreach (var selector in _selectors)
{
if (flatName.TryTrimPrefix(selector.Key, out name))
{
var collection = selector.Value(twin);
return(TwinCollectionExtension.Get(collection, name));
}
}
return(null);
}
